Official Alternate Costumes Speculation Thread

Hey Everyone, I made this thread in the hopes that we can all come up with some cool new ideas for alternate costumes for many of the existing characters, and even for many of the rumoured/leaked characters. As we all already know, Superbot has released the image below as a pre-order bonus, and it's a pretty cool set of alternate costumes. Hopefully there will not only be DLC costumes, but unlockable alternate costumes already in-game. UPDATE: There are alternate costumes as unlocks in game!

So I figured we could use this thread as a way to speculate what might be in the game already, discuss what costumes are cool for each character and show superbot what we would like to see as alternate costumes. Basically just an Alternate Costumes thread in general.

UPDATE:

Here is the final list of the Pre-order Costumes, along with some more leaked official costumes:

EDIT: Below are the current alternate costumes we ahve currently come up with for announced and unannounced/leaked/requested characters. Be sure to contribute to the thread and your contributions will be posted in here and credited!